Vachellia theronii (P.P.Sw.) Boatwr.
Indigenous Endemic

Morphological description

A tall, slender tree 4-6 m high, sparsely branched and branching high above the ground (probably an adaptation to withstanding damage by veld fires). Bark: dark brown to almost black, thick and leather-like, with longitudinal fissures; powdery except around the spines; ends of the young side branches often seeming to die back; young green stems with glands, giving them a sticky appearance; stipules spinescent, the spines in pairs, spines rudimentary, only 1-2 mm long, sometimes absent or. Leaves: rachis 9-19 mm long, sometimes grooved, with a prominent round gland between each pair of pinnae, with 1-4 pairs of pinnae, each about 25 mm long, usually bearing 12 or 13 pairs of densely packed leaflets more or less overlapping each other, glands on the rachilla between most pairs of leaflets; leaflets mostly 6 x 2.3 mm, apex rounded, quite thick, with a thick waxy layer, end pair the largest; petiole 0.5-1.2 cm long, thick, deeply grooved, with a very prominent gland. Flowers: in yellow balls (Dec.-May, or even later, depending on the rainy season). Fruit: a pod, 8-1.4 cm long, dark brown to greyish, curved to straight, usually not constricted between the seeds, with glands making them sticky when young (both flowers and pods at the same time). Seeds: 6-11 per pod. The secondary growth of the young stems is very active, resulting in a thick bark that is very rich in tannins. The wood is hard and high in lignins. The flowering period is very long in comparison with the other closely related species, with the result that pods with ripe seed can be found on the same branch as new flowers. This is unlikely to happen in V. karroo or V. natalitia. From: Coates Palgrave, K; Coates Palgrave, M. 2002. Trees of southern Africa, 3rd ed. Struik, Cape Town. [All rights reserved] As: Vachellia montana (P.P.Sw.) Kyal. & Boatwr.

It is a tall, sleder tree, branching high above the ground, with a relatively pale trunk. It is well adapted to grow in dry and very hot areas and is always associated with shale rock formations. It has the ability to revive well after fire. The wood is dense, hard, compact and relatively heavy. From: Swartz, PP. 2003. Fabaceae: The correct name for Acacia montana. Bothalia 33(2): 164-165. [CC BY] As: Acacia theronii P.P.Sw.

Diagnostic description

The leaves of A. theronii have a robust, mat appearance, as the leaflets (pinnules) are relatively large and densely packed with a thick wax layer as seen under the electron microscope. From: Swartz, PP. 2003. Fabaceae: The correct name for Acacia montana. Bothalia 33(2): 164-165. [CC BY] As: Acacia theronii P.P.Sw.

Habitat

Occurring on the Lebombo mountains, always associated with shale formations. From: Coates Palgrave, K; Coates Palgrave, M. 2002. Trees of southern Africa, 3rd ed. Struik, Cape Town. [All rights reserved] As: Vachellia montana (P.P.Sw.) Kyal. & Boatwr.

It occurs in a transitional area in Umfolozi, Hluhluwe and the Lebombo Mountains and on the bushy hills around Pongola, Magudu, Mkuze and Nongoma. From: Swartz, PP. 2003. Fabaceae: The correct name for Acacia montana. Bothalia 33(2): 164-165. [CC BY] As: Acacia theronii P.P.Sw.

Distribution

Hlabisa near Vryheid, and on the mountains in the Loskop Dam area. From: Coates Palgrave, K; Coates Palgrave, M. 2002. Trees of southern Africa, 3rd ed. Struik, Cape Town. [All rights reserved] As: Vachellia montana (P.P.Sw.) Kyal. & Boatwr.

Hills of Hlabisa in northern KwaZulu-Natal, southeast of Vryheid, as well as on the hills around Groblersdal in Mpumalanga in the Loskopdam Nature Reserve. From: Swartz, PP. 2003. Fabaceae: The correct name for Acacia montana. Bothalia 33(2): 164-165. [CC BY] As: Acacia theronii P.P.Sw.

Occurrence records map

This map contains point-based occurrences at different locations

iNaturalist: BODATSA: Data partners records:

Residence status

Occurrence in the Flora of Southern Africa (FSA) countries and South African provinces. Residence status indicates if a taxon is indigenous, endemic, naturalised or invasive in a specific region. This data is based on specimen records and literature

FSA

SA

BOT

NAM

ESW

LES

WC

EC

NC

FS

GA

KZN

LP

MP

NW

Absent

Indigenous

Endemic

Naturalised

Invasive

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Names and Sources

Accepted name
Vachellia theronii (P.P.Sw.) Boatwr.

Published in: Bot. J. Linn. Soc. 179(2): 293 (2015)

Type: South Africa, KwaZulu-Natal, Hlabisa District, Swartz 178 (PRE, holo.; PRU, iso.)

Synonym(s)

Acacia theronii P.P.Sw., nom.nov. pro A. montana P.P.Sw. (2002)

Published in: Bothalia 33(2): 164 (2003)


Acacia montana P.P.Sw. ex Coates Palgr., nom.illegit., non Benth. (1842)

Published in: Trees S. Africa, ed. 3 :19 (2002)


Vachellia montana (P.P.Sw.) Kyal. & Boatwr., nom.illegit.

Published in: Bot. J. Linn. Soc. 172(4): 514 (2013)


Classification

KINGDOM Plantae

SUBKINGDOM Phanerogamae

ORDER Fabales

FAMILY Fabaceae

SPECIES theronii

16 results for Vachellia theronii (P.P.Sw.) Boatwr.

Specimen records

Barcode: PRE0375794-0 Collector(s) & number: Ross, JH, 1650 | 1966-4-24

South Africa, KwaZulu-Natal, LEBOMBO MTS.; JOZINI DAM; 3 MI. FROM DAM ON SUMMIT OF MT.

Data Resource: BODATSA View record

Barcode: PRE0375746-0 Collector(s) & number: Downing, BH, 452 | 1968-1-17

South Africa, KwaZulu-Natal, LOWER UMFOLOZI DIST.; UMFOLOZI GAME RES.; LOWER EASTERN ASPECT SLOPES MASINDA

Data Resource: BODATSA View record

Barcode: PRE0374482-0 Collector(s) & number: Theron, GK, 718 | 1966-12-13

South Africa, Mpumalanga, LOSKOP DAM

Data Resource: BODATSA View record

Barcode: PRE0375826-0 Collector(s) & number: Acocks, JPH, 13077 | 1946-10-13

South Africa, KwaZulu-Natal, ZULULAND; HLABISA; 9 MI. SE. OF HLABISA

Data Resource: BODATSA View record

Barcode: PRE0375745-0 Collector(s) & number: Downing, BH, 453 | 1968-1-17

South Africa, KwaZulu-Natal, LOWER UMFOLOZI DIST.; UMFOLOZI GAME RES.; LOWER EASTERN ASPECT SLOPES MASINDA

Data Resource: BODATSA View record

Barcode: PRE0375814-0 Collector(s) & number: Codd, LEW, 2009 | 1946-10-13

South Africa, KwaZulu-Natal, HLABISA DIST.; HLABISA; 9 MI. SE. OF HLABISA

Data Resource: BODATSA View record

Barcode: PRE0375743-0 Collector(s) & number: Bourquin, O, PRE 52803 | 1968-1-12

South Africa, KwaZulu-Natal, HLABISA DIST.; HLUHLUWE GAME RES.; NW. OF NTABAMHLOPE ALONG TOURIST RD.

Data Resource: BODATSA View record

Barcode: PRE0375813-0 Collector(s) & number: Ross, JH, 1366 | 1964-10-12

South Africa, KwaZulu-Natal, HLABISA DIST.; MTUBATUBA; 3 MI. N. OF MATUBATUBA

Data Resource: BODATSA View record

Barcode: PRE0375821-0 Collector(s) & number: Moll, EJ, 804 | 1964-3-29

South Africa, KwaZulu-Natal, LOWER UMFOLOZI DIST.; CORRIDOR BETW. MFOLOZI AND HLUHLUWE

Data Resource: BODATSA View record

Barcode: PRE0375847-0 Collector(s) & number: Bayer, AJW, 1470 | 1949-1-28

South Africa, KwaZulu-Natal, HLABISA DIST.; HLUHLUWE GAME RES.

Data Resource: BODATSA View record

Barcode: PRE0375744-0 Collector(s) & number: Downing, BH, 451 | 1968-1-17

South Africa, KwaZulu-Natal, LOWER UMFOLOZI DIST.; UMFOLOZI GAME RES.; LOWER EASTERN ASPECT SLOPES MASINDA

Data Resource: BODATSA View record

Barcode: LNBG$0003237-0 Collector(s) & number: Mukoma, T, 10 | 2003-11-15

South Africa, Mpumalanga, Loskop Suid 53 JS.

Data Resource: BODATSA View record

Barcode: PRE0538976-0 Collector(s) & number: Swartz, PP, 178 | 1976-2-

South Africa, KwaZulu-Natal, HLABISA; OMGEWING VAN HLABISA

General notes: Boom lank (5, 5m) en slank. YI vertakte kroon. Lang dun stam (swart - grys) met lengtegroewe. Punte van takke afsterwend. Growwe blare met prominente geel blaarsteel klier.

Data Resource: BODATSA View record

Barcode: LNBG$0003236-0 Collector(s) & number: Hurter, PJH, 25 | 2003-12-3

South Africa, KwaZulu-Natal, Kwazulu Natal, +-14km North of Hlabisa.

Data Resource: BODATSA View record

Barcode: LNBG$0003235-0 Collector(s) & number: Hurter, PJH, 25 | 2003-12-3

South Africa, KwaZulu-Natal, Kwazulu Natal, +-14km North of Hlabisa.

Data Resource: BODATSA View record

Barcode: PRE0754497-0 Collector(s) & number: van Wyk, E, 562 | 2002-11-16

South Africa, Mpumalanga, On road from Stofberg to Nebo 20 km from Stofberg.

General notes: Conf.: Nkonki,T.N.

Data Resource: BODATSA View record

Plant occurence records per dataset

Plant occurence records per year

Occurrence records map

This map contains point-based occurrences at different locations

iNaturalist: BODATSA: Data partners records:

2013

PERIODICAL/JOURNAL

Phylogenetic position and revised classification of Acacia s.l. (Fabaceae: Mimosoideae) in Africa, including new combinations in Vachellia and Senegalia Kyalangalilwa, LB; Boatwright, JS; Daru, B; Maurin, O; Van der Bank, M

Botanical Journal of the Linnean Society 172: 500-523

2003

PERIODICAL/JOURNAL

Fabaceae: The correct name for Acacia montana Swartz, PP

Bothalia 33(2)164-165

2002

BOOK

Trees of southern Africa, 3rd ed. Coates Palgrave, K; Coates Palgrave, M

Struik, Cape Town

No results found for Vachellia theronii (P.P.Sw.) Boatwr.

No assessment available

Part(s) of plant used Use(s) Reference

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